우여명 (아이스크림에듀) 자동으로 코드 리뷰를 해주는 AI 서비스인 Amazon CodeGuru를 통해 자바 애플리케이션에서 컴퓨팅 자원을 낭비하는 실수와 오류를 잡는 방법을 소개합니다.

1. GURU ?
/ ,
SEOUL

2. • -
• AWSKRUG 🐳
• .
• Java, kotlin, Spring .
• .
( )
AWSKRUG

3. •
•
•
• CodeGuru Reviewer
•
• CodeGuru Profiler
• AI

4. • CodeGuru Reviewer, Profiler
• AI

5. ?
• (Software Quality Assurance)
•
•
•
( , “ ”)

6. Git
• git
•
• ( )
•
•

7. •
• , , .
• .
•
• (AWS API , ) .
•
• .
•
• .

8. • CASE 1. A
• CASE 2. B
• CASE 3. C
• CASE 4.
D

9. ?
?
…

10. Amazon CodeGuru

11. CodeGuru
•
•
•
•
•
•
•

12. CodeGuru
CodeGuru Profiler
CodeGuru Reviewer

13. CodeGuru Reviewer
•
•
• GitHub AWS CodeCommit
•
•
• ( X)

14. CodeGuru Reviewer
Pull
Request Approval
Merge
Reviewer
Code
Review
Branch
Make
changes
locally
Amazon CodeGuru Reviewer

15. CodeGuru Reviewer
• AWS : AWS API
• ( : ) ( : )
• :
• ( : ) ( : )
• :
• ( : )
• :
• ( : )
• :
• ( : )

16. CodeGuru Reviewer Workflow
Code
Repository
CodeGuru
Reviewer
3. Recommendation
4. Developer
Feedback
5. Improvement for better
recommendations
1. Repository
Association
Repo Admin2. Pull
Request
Developer

17. Amazon CodeGuru Reviewer – How it Works
Input:
Source Code
try (GZip gzip =
GZIPInputStream.create(
url.openStream())) {
use(gzip);
} catch (Exception e) {
handle();
}
/
Feature Extraction
gzip =
GZIPInputStream
.create(stream)
use(gzip)
ENTRY
EXIT
stream =
url.openStream()
gzip.close()
handle()
throw
Exception
ML
Machine Learning
Code
corpus
Output:
Recommendations
Possible Resource
Leak with
url.openStream().
Use try-with-resources

18. CodeGuru Reviewer
DEMOhttps://github.com/voyagerwoo/codeguru-test/pull/1

19. • .
• , .

20. "Amazon CodeGuru Reviewer
."
“ Amazon DynamoDB
. Amazon CodeGuru Reviewer
. .”
“Amazon CodeGuru Reviewer (DB ) try-with-resources
, . +1”

21. ?

22. APM
•
•
•
?

23. ?
Amazon CodeGuru Profiler

24. CodeGuru Profiler
•
• &
• CPU
•
•

25. •
•
•
•

26. CodeGuru
Profiler backend
Customer’s
application
Customer’s
application
Customer’s
application
Customer’s
application
Customer Application
CodeGuru Profiler – How it Works
Profiler
thread
Profiler
thread
Profiler
thread
Profiler
thread
Actionable recommendations
Console –
Recommendation reports
Console - Visualizations

27. CodeGuru Profiler
DEMO
https://github.com/aws-samples/aws-codeguru-profiler-sample-application

28. Chris Butterfield, SDE
CodeGuru CPU 55.97%
. 7.5 .
75% .
Rajesh Konatham, SDE
CPU .
40%, 67% .

29. CodeGuru
• PR CodeGuru Reviewer
• (CPU)
CodeGuru Profiler
• Java
• Preview
•
• us-east-1, us-east-2, us-west-2, ap-southeast-2, eu-west-1
•
2020 1 21

30. Tabnine
CodeGuru
Deep Code
Kite
Codota
SonarQube
Veracode
ES lint
CheckStyle
DeepScan
IntelliCode
(2020 1 13 ) .
. .

31. AI
• AI
•
•
•
•
• ( ) !

32. !